linux-kernel - [PATCH 1/2] emac: add missing support of 10mbit in emac/rgmii

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Date:	Mon, 26 May 2014 22:24:17 +0400
From:	Ivan Mikhaylov <ivan@...ibm.com>
To:	netdev@...r.kernel.org
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org,
	"David S. Miller" <davem@...emloft.net>,
	Alistair Popple <alistair@...ple.id.au>,
	Rob Herring <robh+dt@...nel.org>,
	Grant Likely <grant.likely@...aro.org>
Subject: [PATCH 1/2] emac: add missing support of 10mbit in emac/rgmii

In chips of emac/rgmii b'000' for 0/1 channel isn't suitable which
resulted in non working network interface in this mode.

Signed-off-by: Ivan Mikhaylov <ivan@...ibm.com>

---
 drivers/net/ethernet/ibm/emac/rgmii.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/ibm/emac/rgmii.c b/drivers/net/ethernet/ibm/emac/rgmii.c
index 4fb2f96..a01182c 100644
--- a/drivers/net/ethernet/ibm/emac/rgmii.c
+++ b/drivers/net/ethernet/ibm/emac/rgmii.c
@@ -45,6 +45,7 @@
 
 /* RGMIIx_SSR */
 #define RGMII_SSR_MASK(idx)	(0x7 << ((idx) * 8))
+#define RGMII_SSR_10(idx)	(0x1 << ((idx) * 8))
 #define RGMII_SSR_100(idx)	(0x2 << ((idx) * 8))
 #define RGMII_SSR_1000(idx)	(0x4 << ((idx) * 8))
 
@@ -139,6 +140,8 @@ void rgmii_set_speed(struct platform_device *ofdev, int input, int speed)
 		ssr |= RGMII_SSR_1000(input);
 	else if (speed == SPEED_100)
 		ssr |= RGMII_SSR_100(input);
+	else if (speed == SPEED_10)
+		ssr |= RGMII_SSR_10(input);
 
 	out_be32(&p->ssr, ssr);
 
-- 
1.9.3



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